Huawei BTS3900L Installation Manual

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BTS3900L (Ver.C)

Installation Guide

Issue 07

Date 2013-11-08

HUAWEI TECHNOLOGIES CO., LTD.

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No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang Shenzhen 518129 People's Republic of China

Website: http://www.huawei.com

Email: support@huawei.com

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BTS3900L (Ver.C) Installation Guide

Purpose

About This Document

This document describes the procedure for installing a BTS3900L (Ver.C) (referred to as BTS3900L) cabinet, boards, modules, and cables. It also provides checklists for hardware installation.

Product Versions

The following table lists the product versions related to this document.

Product Name Product Version

BTS3900L V100R007C00

BTS3900L GSM V100R014C00

BTS3900L WCDMA V200R014C00

BTS3900L LTE V100R005C00

Intended Audience

This document is intended for:

l Base station installation engineers

Organization

1 Changes in BTS3900L (Ver.C) Installation Guide

This chapter describes the changes in BTS3900L (Ver.C) Installation Guide.

2 Preparing for Installation

This section describes the tools and meters that need to be available before the installation. It also describes the skills and qualifications that the installation engineers must possess.

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BTS3900L (Ver.C) Installation Guide

About This Document

3 Information About the Installation

This section provides important notes for the BTS3900L cabinet with -48 V AC power. Before a cabinet is installed, you must familiar with the cabinet structure, application scenario, and space requirements. This document describes how to install the BTS3900L cabinet configured with the RFUs. For details about how to install the BTS3900L cabinet configured with RFUs and RRUs, see the BTS3900L (RFU+RRU) Installation Guide.

4 Unpacking the Equipment

This chapter describes how to unpack and check the delivered equipment to ensure that all the materials are included and intact.

5 Obtaining the ESN

This chapter describes how to obtain the Electronic Serial Number (ESN). The ESN is a unique identifier of a Network Element (NE). Record the ESN for later commissioning of the base station before installation.

6 Installation Process

The installation procedure mainly involves installing the cabinet and installing cables. In addition, installing optional modules according to the requirements onsite may also be included in the installation procedure.

7 Checking Installed Modules and Cables

This section describes how to check the internal modules and cables that are installed before delivery.

8 Installing the Cabinet

This chapter describes the procedure for installing the BTS3900L cabinet.

9 Installing a PGND Cable

The PGND cable is used to connect the PGND screws on the cabinet and the ground bar to ensure proper grounding of the cabinet.

10 (Optional) Installing the Modules

The mandatory modules in the cabinet are already installed. The optional modules can be installed on site according to different field requirements.

11 Installing the Cables

The cables in the BTS3900L cabinet are already installed. You need to install only the cables led into the cabinet and cables for optional components.

12 Installation Checklist

Check the installation items, installation environment, and cable-related items after the cabinets and devices are all installed.

13 Powering On the BTS3900L

This section describes how to power on the BTS3900L cabinet and handle the power supply failure to the components in the cabinet.

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BTS3900L (Ver.C) Installation Guide

Conventions

About This Document

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol Description

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal injury.

Calls attention to important information, best practices and tips.

NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.

General Conventions

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are in

boldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New

Examples of information displayed on the screen are in Courier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.

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BTS3900L (Ver.C) Installation Guide

About This Document

Convention Description

Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in brackets [ ] are optional.

{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }

Optional items are grouped in braces and separated by vertical bars. A minimum of one item or a maximum of all items can be selected.

[ x | y | ... ]

Optional items are grouped in brackets and separated by vertical bars. Several items or no item can be selected.

GUI Conventions

The GUI conventions that may be found in this document are defined as follows.

Convention Description

Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK.

> Multi-level menus are in boldface and separated by the ">"

signs. For example, choose File > Create > Folder.

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

Format Description

Key Press the key. For example, press Enter and press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt

+A means the three keys should be pressed concurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means

the two keys should be pressed in turn.

Mouse Operations

The mouse operations that may be found in this document are defined as follows.

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BTS3900L (Ver.C) Installation Guide About This Document

Action Description

Click Select and release the primary mouse button without moving

the pointer.

Double-click Press the primary mouse button twice continuously and

quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the

pointer to a certain position.

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BTS3900L (Ver.C) Installation Guide

Contents

About This Document.....................................................................................................................ii

1 Changes in BTS3900L (Ver.C) Installation Guide..................................................................1

2 Preparing for Installation.............................................................................................................5

2.1 Document Preparations...................................................................................................................................................6

2.2 Preparing Tools and Meters............................................................................................................................................6

2.3 Skills and Requirements for Onsite Personnel...............................................................................................................7

3 Information About the Installation...........................................................................................8

3.1 Configurations of the BTS3900L Cabinet......................................................................................................................9

3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured).................................................................11

3.3 Application Scenario of the BTS3900 Cabinet (RRUs and RFUs Configured)...........................................................12

3.4 Installation Clearance and Position Requirements.......................................................................................................14

4 Unpacking the Equipment.........................................................................................................17

5 Obtaining the ESN......................................................................................................................19

6 Installation Process.....................................................................................................................21

7 Checking Installed Modules and Cables................................................................................23

8 Installing the Cabinet.................................................................................................................26

8.1 Installing the Cabinet Without a Base..........................................................................................................................27

8.2 Installing the Cabinet with Base on the Concrete Floor...............................................................................................32

8.3 Installing a Cabinet with Base on an ESD Floor..........................................................................................................36

9 Installing a PGND Cable...........................................................................................................43

10 (Optional) Installing the Modules.........................................................................................45

10.1 Installing the GPS surge protector..............................................................................................................................46

10.2 Installing the GATM and Bias-Tee............................................................................................................................49

10.3 Installing the DCDU-11B...........................................................................................................................................52

10.4 Installing the BBU Case.............................................................................................................................................56

10.5 Installing the BBU Components.................................................................................................................................57

11 Installing the Cables.................................................................................................................61

11.1 Cabling Requirements................................................................................................................................................63

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11.2 Cable Routes...............................................................................................................................................................69

11.3 Installing the Power Cables........................................................................................................................................72

11.3.1 Standard Powering Scenario....................................................................................................................................72

11.3.2 Small Configuration Scenario I: 2x80A in Upper and Lower Shelves...................................................................74

11.3.3 Small Configuration Scenario II: 2x80A in Lower Shelf in Parallel.......................................................................76

11.3.4 Small Configuration Scenario III: 2x80A in Upper Shelf in Parallel......................................................................79

11.4 Installing a BBU Power Cable....................................................................................................................................82

11.5 (Optional) Installing RRU Power Cables...................................................................................................................83

11.6 Installing the Transmission Cables.............................................................................................................................86

11.6.1 Installing an E1/T1 Cable........................................................................................................................................86

11.6.2 Installing an FE/GE Optical Cable..........................................................................................................................87

11.6.3 Installing an FE/GE Cable.......................................................................................................................................89

11.7 Installing the Monitoring Signal Cables.....................................................................................................................90

11.7.1 (Optional) Installing the Inter-BBU Signal Cable...................................................................................................90

11.7.2 (Optional)Installing the Monitoring Signal Cable for the EMU.............................................................................95

11.7.3 Installing a BBU Alarm Cable.................................................................................................................................96

11.8 Installing an RF Jumper..............................................................................................................................................97

11.9 Installing the CPRI Cable...........................................................................................................................................98

11.10 (Optional)Installing a CPRI Optical Fiber..............................................................................................................100

12 Installation Checklist..............................................................................................................104

13 Powering On the BTS3900L...................................................................................................107

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BTS3900L (Ver.C) Installation Guide

1 Changes in BTS3900L (Ver.C) Installation Guide

1 Changes in BTS3900L (Ver.C) Installation

Guide

This chapter describes the changes in BTS3900L (Ver.C) Installation Guide.

07 (2013-11-08)

This is the seventh official release.

Compared with issue 06 (2013-08-23), no topic is added.

Compared with issue 06 (2013-08-23), this issue incorporates the following changes:

Topic Change Description

l 3.1 Configurations of the BTS3900L

Cabinet

l 3.3 Application Scenario of the

BTS3900 Cabinet (RRUs and RFUs Configured)

Installing a DCDU-11B Deleted the steps of installing a DCDU-12B on

11.5 (Optional) Installing RRU Power Cables

Deleted the description of that a DCDU-11B or DCDU-12B can be configured in the BTS3900L (Ver.C) cabinet.

the wall.

l Deleted the description of installing RRU

power cables when a DCDU-12B is installed to supply power.

l Added the steps of installing a ground clip

to ground RRU power cables near the feeder window when the RRUs are installed outdoors.

Compared with issue 06 (2013-08-23), the following topic is deleted:

l Installing a DCDU-11B or DCDU-12B in a Cabinet

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BTS3900L (Ver.C) Installation Guide 1 Changes in BTS3900L (Ver.C) Installation Guide

06 (2013-08-23)

This is the sixth official release.

Compared with issue 05 (2013-05-27), this issue adds the following contents:

l Installing a DCDU-11B or DCDU-12B in a Cabinet

l 11.7.3 Installing a BBU Alarm Cable

Compared with issue 05 (2013-05-27), this issue incorporates the following changes:

Topic Change Description

05 (2013-05-27)

l 3.1 Configurations of the BTS3900L

Cabinet

l 3.3 Application Scenario of the

BTS3900 Cabinet (RRUs and RFUs Configured)

Installing a DCDU-11B Added the steps of installing a DCDU-12B on

11.5 (Optional) Installing RRU Power Cables

Compared with issue 05 (2013-05-27), no information is deleted.

This is the fifth official release.

Compared with issue 04 (2012-12-30), no topic is added or deleted.

Compared with issue 04 (2012-12-30), this issue incorporates the following changes:

Added the description of that a DCDU-11B or DCDU-12B can be configured in the BTS3900L (Ver.C) cabinet.

the wall.

Added the description of installing RRU power cables when a DCDU-12B is installed to supply power.

Topic Change Description

11.7.1 (Optional) Installing the InterBBU Signal Cable

Modified the steps of binding and routing the inter-BBU signal cable.

04 (2012-12-30)

This is the fourth official release.

Compared with 03 (2012-11-08), no topic is added.

Compared with 03 (2012-11-08), this issue incorporates the following change:

Topic Change Description

10.5 Installing the BBU Components Added the precautions for installing boards.

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1 Changes in BTS3900L (Ver.C) Installation Guide

Topic Change Description

03 (2012-11-08)

11.7.1 (Optional) Installing the Inter-BBU Signal Cable

Compared with 03 (2012-11-08), no information is deleted.

This is the third commercial release.

Compared with 02 (2012-06-20), no topic is added.

Compared with 02 (2012-06-20), this issue incorporates the following change:

Content Change Description

11.10 (Optional)Installing a CPRI Optical Fiber

11.2 Cable Routes Optimized the description of the cable routing

Modified the description of BBU interconnection signal cables in the prerequisites.

Added a picture for routing CPRI fiber optic cables.

policies.

02 (2012-06-20)

01 (2012-04-25)

Compared with 02 (2012-06-20), no topic is deleted.

This is the second official release.

Compared with 01 (2012-04-25), this issue adds the following contents:

l (Optional)Installing the RRU Input Power Cable

l 11.10 (Optional)Installing a CPRI Optical Fiber

Compared with 01 (2012-04-25), no topic is changed.

Compared with 01 (2012-04-25), no topic is deleted.

This is the first commercial release.

Compared with Draft B (2012-03-20), no topic is added.

Compared with Draft B (2012-03-20), this issue incorporates the following change:

Content Change Description

11.7.1 (Optional) Installing the Inter-BBU Signal Cable

Added the method to identify the type of optical modules.

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BTS3900L (Ver.C) Installation Guide

Compared with Draft B (2012-03-20), no topic is deleted.

Draft B (2012-03-20)

This is the Draft release.

Compared with Draft A (2012-02-10), no topic is added.

Compared with Draft A (2012-02-10), this issue incorporates the following changes:

Content Change Description

1 Changes in BTS3900L (Ver.C) Installation Guide

3.1 Configurations of the BTS3900L Cabinet

3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured)

The whole document Made some editorial changes.

Compared with Draft A (2012-02-10), no topic is deleted.

Draft A (2012-02-10)

This is the Draft release.

Compared with MBTS V100R004C00, WCDMA-NodeB V200R013C00, GSM-BTS V100R013C00, eNodeB V100R004C00, this issue adds the following topic:

l 2.1 Document Preparations

l 3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured)

l 11.7.1 (Optional) Installing the Inter-BBU Signal Cable

l 13 Powering On the BTS3900L

Updated the figure of cabinet.

Optimized the figures of cabinet configuration.

Compared with MBTS V100R004C00, WCDMA-NodeB V200R013C00, GSM-BTS V100R013C00, eNodeB V100R004C00, this issue incorporates the following change:

Content Change Description

The whole document Reorganized the document and optimized

some descriptions and figures.

Compared with MBTS V100R004C00, WCDMA-NodeB V200R013C00, GSM-BTS V100R013C00, eNodeB V100R004C00, this issue deletes the following topic:

l Performing Power-On Check

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BTS3900L (Ver.C) Installation Guide 2 Preparing for Installation

2 Preparing for Installation

About This Chapter

This section describes the tools and meters that need to be available before the installation. It also describes the skills and qualifications that the installation engineers must possess.

2.1 Document Preparations

This section describes the reference documents that must be ready before the installation.

2.2 Preparing Tools and Meters

This section describes the tools and meters that are required before installation.

2.3 Skills and Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsite personnel must be familiar with correct operation methods and safety precautions.

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BTS3900L (Ver.C) Installation Guide 2 Preparing for Installation

2.1 Document Preparations

This section describes the reference documents that must be ready before the installation.

l Before the installation, you must familiar with the following reference documents:

– BTS3900L (Ver.C) Hardware Description

– Safety Information

l During the installation, you must familiar with the following reference document:

– Installation Reference

2.2 Preparing Tools and Meters

This section describes the tools and meters that are required before installation.

Marking pen

Combination wrench (capacity 32 mm)

Power cable crimping tool RJ11 crimping tool Cable cutter

Rubber mallet Soldering iron Wire stripper

Phillips screwdriver (M3 to M6)

Flat-head screwdriver (M3 to M6)

Socket wrench Torque wrench

Diagonal pliers

Hammer drill (Ø16) Heat gun Level

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Multimeter Measuring tape Vacuum cleaner

ESD wrist strap ESD gloves Torque screwdriver

Protective gloves Hydraulic pliers Utility knife

2.3 Skills and Requirements for Onsite Personnel

Onsite personnel must be qualified and trained. Before performing any operation, onsite personnel must be familiar with correct operation methods and safety precautions.

Before the installation, pay attention to the following items:

l The customer's technical engineers must be trained by Huawei and be familiar with the

proper installation and operation methods.

l The number of onsite personnel depends on the engineering schedule and installation

environment. Generally, only three to five onsite personnel are necessary.

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BTS3900L (Ver.C) Installation Guide 3 Information About the Installation

3 Information About the Installation

About This Chapter

3.1 Configurations of the BTS3900L Cabinet

This section describes the interior and components of the BTS3900L cabinet.

3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if only RFUs are configured in a BTS3900L cabinet.

3.3 Application Scenario of the BTS3900 Cabinet (RRUs and RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if both RRUs and RFUs are configured in a BTS3900L cabinet.

3.4 Installation Clearance and Position Requirements

The installation of cabinets must meet the requirements of the proper design, practical installation, and elegant layout.

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3.1 Configurations of the BTS3900L Cabinet

This section describes the interior and components of the BTS3900L cabinet.

Figure 3-1 shows the interior and Table 3-1 describes the components of the BTS3900L cabinet.

Figure 3-1 Interior of the BTS3900L Cabinet

Table 3-1 Components in the BTS3900L cabinet

No. Module Optional or

Mandatory

1 Filler panel Optional - If a slot in the RFU subrack

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Maximum Quantity

Remark

is vacant, insert a filler panel into the slot. This ensures normal ventilation of the cabinet.

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No. Module Optional or

Mandatory

Maximum Quantity

Remark

2 RFU Mandatory 12 The RFU modulates and

demodulates baseband signals and RF signals, processes data, and combines and divides signals.

3 Fan Assembly Mandatory 2 Fan assembly dissipates the

heat from the cabinet.

4 Air intake vent Mandatory - -

5 DCDU-11A Mandatory 2 -

6 BBU Mandatory 1 BBU3900 processes the

baseband signals and enables interaction between the base station and the BSC or RNC.

7 Cable trough Mandatory - -

8 BBU Optional 1 This 2 U space can house a

BBU in triple-mode base stations. It is recommended that this space be reserved even when only one BBU is installed.

9 Remaining space Optional - This 2 U space can house the

GATM or transmission equipment. The GATM is preferentially installed in this space and is supplied with power by the DCDU-01. If there is no GATM, the transmission equipment is installed in this space.

NOTE

The transmission equipment is preferentially installed outside the cabinet. However it can be installed at the bottom of the cabinet under some special condition (e.g.: space constraint). The following requirements must be satisfied:

l The transmission equipment must be able to work properly at a temperature equal to or higher than

55°C.

l The transmission equipment is fed with external power supply since DCDU-11A does not support

power supply to transmission equipment.

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BTS3900L (Ver.C) Installation Guide 3 Information About the Installation

3.2 Application Scenario of the BTS3900L Cabinet (Only RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if only RFUs are configured in a BTS3900L cabinet.

Cabinet Configuration Rules

l A maximum of 12 RFUs can be configured in a single site. An additional site is required

is number of RFU exceeds twelve.

l The BTS3900L cabinet support neither side-by-side nor stack installation.

l In the application scenario in single- or dual-mode, only one BBU can be configured and

it is configured in the upper part of the cabinet by default.

l In a triple-mode scenario, two BBUs are configured.

l In a triple-mode scenario, BBU 0 is the root BBU and BBU 1 is the leaf BBU.

Cabinet Configurations for a Single- or Dual-Mode Scenario

Figure 3-2 show the configurations of the BTS3900L in a single- or dual-mode scenario.

Figure 3-2 BTS3900L in a single- or dual-mode scenario

1. BTS3900L (GATM not configured)

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2. BTS3900L (GATM configured)

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BTS3900L (Ver.C) Installation Guide

Cabinet Configurations for a Triple-Mode Scenario

Figure 3-3 shows the configurations of the BTS3900L cabinet in a triple-mode scenario.

Figure 3-3 BTS3900L in a triple-mode scenario

3 Information About the Installation

3.3 Application Scenario of the BTS3900 Cabinet (RRUs and RFUs Configured)

This section describes the configurations of a single-mode, dual-mode, and triple-mode base station if both RRUs and RFUs are configured in a BTS3900L cabinet.

Rules for Configuring the Cabinet

l In a single-mode or dual-mode scenario, only one BBU is configured.

l In a triple-mode scenario, two BBUs are configured. BBU 0 is the root BBU and BBU 1

is the leaf BBU.

l A BTS3900L base station supports a maximum of 12 RFUs and 6 RRUs. If there are more

than 12 RFUs and 6 RRUs, one or more base stations need to be added.

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l When both the RFU and RRU support the GSM mode, the BBU3900 must be configured

with a GTMUb. In addition, the RFUs supporting the GSM mode are connected to the GTMUb, and the RRUs supporting the GSM mode are connected to the UBRI.

NOTE

When a BTS3900L (Ver.C) is configured with RFUs and RRUs, a DCDU-11B is installed on a wall to distribute power to RRUs.

Cabinet Configurations for a Single- or Dual-Mode Base Station

Figure 3-4 shows the interior of a single- or dual-mode BTS3900L.

Figure 3-4 Single- or dual-mode base station

Cabinet Configurations for a Triple-Mode Base Station

Figure 3-5 shows the interior of a triple-mode BTS3900L..

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Figure 3-5 Triple-mode base station

3.4 Installation Clearance and Position Requirements

The installation of cabinets must meet the requirements of the proper design, practical installation, and elegant layout.

Installation Clearance Requirements

The clearance requirements of the BTS3900L cabinets are as follows:

l The cabinet can be installed with its back against the wall.

l The cabinet can be installed with one side against the wall.

l At least 800 mm in front of the cabinet is reserved for maintenance.

l At least 200 mm on top of the cabinet is reserved for cabling.

Figure 3-6 shows the cabinet installation clearance requirements (unit: mm).

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Figure 3-6 Cabinet installation clearance requirements

Cabinet Layout Requirements

The layout principles of the BTS3900L cabinets are as follows:

l The cabinets are as close to the feeder window as possible so that the feeder is used less.

l The cabinets are installed in a row in the same equipment room for easy cabling.

l No space is reserved for the same cabinets if they are installed next to each other.

Figure 3-7 shows the typical cabinet layout (unit: mm).

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BTS3900L (Ver.C) Installation Guide 3 Information About the Installation

Figure 3-7 Typical Cabinet Layout

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BTS3900L (Ver.C) Installation Guide

Context

4 Unpacking the Equipment

This chapter describes how to unpack and check the delivered equipment to ensure that all the materials are included and intact.

Procedure

Step 1 Check the total number of articles in each case according to the packing list.

NOTE

When transporting, moving, or installing the equipment, components, or parts, you must:

l Prevent them from colliding with doors, walls, shelves, or other objects.

l Wear clean gloves, and avoid touching the equipment, components, or parts with bare hands, sweat-

soaked gloves, or dirty gloves.

NOTICE

l After a cabinet or an BBU is unpacked, it must be powered on within 7 days.

l After an RRU is unpacked, it must be powered on within 24 hours.

If ... Then ...

The total number tallies with the packing list

The total number does not tally with the packing list

Step 2 Check the exterior of the packing case.

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Go to Step 2.

Find out the cause and report any missing articles to the local Huawei office.

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BTS3900L (Ver.C) Installation Guide 4 Unpacking the Equipment

If ... Then ...

The outer packing is intact Go to Step 3.

The outer packing is severely damaged or soaked

The shockwatch label is red Stop unpacking the wooden crate, and then

Step 3 Check the type and quantity of the equipment in the cases according to the packing list.

If ... Then ...

Types and quantity of the article tally with those on the packing list

Either shipment shortage, wrong shipment or damaged articles.

Find out the cause and report it to the local Huawei office.

report it to the transportation company.

Sign the Packing List with the customer.

Report to the local Huawei office.

CAUTION

l To protect the equipment and prevent damage to the equipment, you are advised to keep the

unpacked equipment and packing materials indoors, take photos of the stocking environment, packing case or carton, packing materials, and any rusted or eroded equipment, and then file the photos.

l Verify that the insulation layers of all RRU cables are intact. If the insulation layers are

damaged or broken, water will penetrate into the cables, which may cause damages to RRUs or human injury.

----End

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BTS3900L (Ver.C) Installation Guide

5 Obtaining the ESN

Procedure

Step 1 Record the ESN on the BBU.

l If there is not a label on the FAN unit of the BBU, you must record the ESN and site

information that is printed on a mounting ear of the BBU. Figure 5-1 shows the position of the ESN.

l If there is a label on the FAN unit of the BBU, the ESN is printed on the label and a mounting

ear of the BBU. In this case, you must take the label and record the site information on the side labeled Site, as shown in Figure 5-2.

Figure 5-1 Obtaining the ESN (1)

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BTS3900L (Ver.C) Installation Guide 5 Obtaining the ESN

Figure 5-2 Obtaining the ESN (2)

Step 2 Report the ESN to the engineer for the commissioning of the base station.

NOTE

If multiple BBUs need to be configured on site, record the ESN for each BBU and report them to the engineer responsible for base station commissioning.

----End

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BTS3900L (Ver.C) Installation Guide 6 Installation Process

6 Installation Process

NOTE

In a triple-mode scenario, if a cabinet is configured with two BBU, the BBU case, power cable, and CPRI cable must be installed on site.

Figure 6-1 shows the installation procedure.

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BTS3900L (Ver.C) Installation Guide 6 Installation Process

Figure 6-1 Installation procedure

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BTS3900L (Ver.C) Installation Guide 7 Checking Installed Modules and Cables

7 Checking Installed Modules and Cables

This section describes how to check the internal modules and cables that are installed before delivery.

Checklist for the Modules

Ensure that the modules are securely installed in the cabinet. Tighten the screws if necessary.

Checklist for the Cables

Check whether the power cables are securely connected, and the screws are tightened on the cables in the cabinet by referring to Figure 7-1 and Table 7-1.

Figure 7-1 Power cables in the cabinet

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BTS3900L (Ver.C) Installation Guide 7 Checking Installed Modules and Cables

Table 7-1 Power cables in the cabinet

SN Cable One End The Other End

P0 to P5

RFU power cable

P6 Power cable

for the fan box

Connector Installation

Position

3V3 power connector

PWR port on the RFU

-48V port on the fan box

Connector Installation

Position

Tool-less female power connector (pressfit type)

Tool-less female power connector

Ports LOAD0 to LOAD5 on the DCDU-11A

LOAD6 port on the DCDU-11A

(pressfit type)

P7 andP8BBU power

cable

3V3 power connector

PWR port on the UPEU

Tool-less female power connector (pressfit type)

LOAD7 and LOAD8 ports on the DCDU-11A

Check whether the power cables are securely connected, and the screws are tightened on the cables in the cabinet by referring to Figure 7-2 and Table 7-2.

Figure 7-2 Signal cables in the cabinet

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BTS3900L (Ver.C) Installation Guide 7 Checking Installed Modules and Cables

Table 7-2 Signal cables in the cabinet

SN Cable One End The Other End

S1 Monitoring

signal cable

Connector Installation

Position

RJ45 connector

COM IN port on the fan box

Connector Installation

Position

RJ45 connector

MON0 port on

the UPEU for the fan box

S2 ELU signal

cable

RJ45 connector

SENSOR port on the fan box

RJ45 connector

Electronic

Labeling Unit

(ELU)

S3 Signal cable

between cascaded fan

RJ45 connector

COM OUT port on the upper fan box.

RJ45 connector

COM IN port

on the lower

fan box boxes

l The CPRI cable connected to BBU0, which is installed in the upper part of the cabinet, is

installed before delivery. Ensure that the CPRI cable is securely connected. For details about how to insert and remove CPRI cables, see Inserting and Removing CPRI Cables.

l The CPRI cable connected to BBU1, which is installed in the lower part of the cabinet, is

not installed before delivery. The CPRI cable must be installed onsite. For details about how to install the CPRI cable, see Installing the CPRI Cable.

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BTS3900L (Ver.C) Installation Guide 8 Installing the Cabinet

8 Installing the Cabinet

About This Chapter

This chapter describes the procedure for installing the BTS3900L cabinet.

8.1 Installing the Cabinet Without a Base

This section describes the procedure and precautions to be taken for installing a cabinet without a base.

8.2 Installing the Cabinet with Base on the Concrete Floor

This section describes the procedure and precautions for installing the base and the cabinet on the concrete floor.

8.3 Installing a Cabinet with Base on an ESD Floor

This section describes the procedure and precautions for installing the base and the cabinet on the ESD floor.

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BTS3900L (Ver.C) Installation Guide

8.1 Installing the Cabinet Without a Base

This section describes the procedure and precautions to be taken for installing a cabinet without a base.

Prerequisites

A marker, a level, a multimeter, and a vacuum cleaner are available.

A rubber mallet, a hammer drill (Φ16), a screwdriver and a torque wrench are available.

Context

The BTS3900L cabinet is installed without a base by default.

The cabinet door can be removed before the cabinet is installed for easy operations.

Procedure

8 Installing the Cabinet

Step 1 Determine the mounting holes for the cabinet based on the anchor holes on the marking template,

as shown in Figure 8-1.

Figure 8-1 Positioning the mounting holes for the cabinet

(1) Anchor hole

Step 2 Drill holes at the anchor points, and then install the expansion bolt assemblies, as shown in

Figure 8-2.

(2) Concrete floor (3) Marking template

1. Use a hammer drill (Φ16) to drill holes at the anchor points, and ensure that the depth of each hole ranges from 52 mm to 60 mm.

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8 Installing the Cabinet

CAUTION

Take proper safety measures to protect your eyes and respiratory tract against the dust before drilling holes.

After disassembling the expansion bolt assembly, ensure that the top of the expansion tube is on the same level as the floor.

2. Use a vacuum cleaner to clear the dust inside and around the holes. If the inter-hole spacing is too wide or too narrow, locate and drill holes again.

3. Tighten the expansion bolt slightly, and then put the expansion bolt assembly into the hole vertically.

4. Use a rubber mallet to hammer the expansion bolt until the expansion tube is buried into the hole.

5. Remove the M12x60 bolt, spring washer, and flat washer from each expansion bolt assembly in sequence.

Figure 8-2 Drilling a hole and installing an expansion bolt assembly

(1) M12x60 bolt

(2) Spring washer (3) Flat washer (4) Expansion tube

Step 3 Remove the cabinet door to facilitate operations, as shown in Figure 8-3.

1. Disconnect the equipotential cable from the lower part of the door.

2. Rotate the spring pin 90° to the left and press the pin.

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8 Installing the Cabinet

Figure 8-3 Removing the cabinet door

Step 4 Move the cabinet on the installation holes, place the expansion bolt assemblies into the holes,

and use a socket wrench to partially tighten them.

Step 5 Use a level to check the cabinet level, as shown in Figure 8-4. If the bubble is not at the center

of the level, adjust the cabinet level through the adjusting bolts.

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8 Installing the Cabinet

Figure 8-4 Checking the cabinet level

Step 6 Test the insulation between the cabinet and the expansion bolts.

1. Set the multimeter to the megohm position (MΩ).

2. Measure the resistance between the cabinet and the four expansion bolts, as shown in

Figure 8-5.

Figure 8-5 Measuring the resistance

l If the resistance is less than five megohms, you can infer that the cabinet is not insulated

from the floor. Go to step Step 6.3.

l If the resistance is greater than or equal to five megohms, you can infer that the cabinet

is insulated from the floor. End the test.

3. Decompose the expansion bolt assemblies, and check whether insulating washers are missing or damaged.

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l If insulating washers are missing or damaged, reinstall them, and then adjust the cabinet

level.

l If no insulating washers are missing or damaged, check whether the multimeter is faulty

or whether the setting is correct.

Step 7 Place the cabinet on the mounting holes, install the expansion bolts, and then tighten the bolt

until the tightening torque reaches 45 N·m, as shownFigure 8-6.

Figure 8-6 Securing the cabinet

Step 8 Install the cabinet door, as shown in Figure 8-7.

1. Align the spring pin with the hole, rotate the pin to the right until it is tightly pressed by the door.

2. Install the equipotential cable on the door.

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8 Installing the Cabinet

Figure 8-7 Installing the cabinet door

----End

8.2 Installing the Cabinet with Base on the Concrete Floor

This section describes the procedure and precautions for installing the base and the cabinet on the concrete floor.

Prerequisites

A marker, a level, a multimeter, and a vacuum cleaner are available.

A rubber mallet, a hammer drill (Φ16), a screwdriver and a torque wrench are available.

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Context

Procedure

Step 1 Determine the position of the cabinet by referring to the marking template, as shown in Figure

8 Installing the Cabinet

When installing a BTS3900L on a base, use a marking template matching the base to determine the positions of the holes for installing the cabinet.

8-8.

Figure 8-8 Positioning the cabinet

(1) Anchor hole

(2) Concrete floor (3) Marking template

Step 2 Drill holes at the anchor points, and then install the expansion bolt assemblies, as shown in

Figure 8-9.

1. Use a hammer drill (Φ16) to drill holes at the anchor points, and ensure that the depth of each hole ranges from 52 mm to 60 mm.

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8 Installing the Cabinet

CAUTION

Take proper safety measures to protect your eyes and respiratory tract against the dust before drilling holes.

After disassembling the expansion bolt assembly, ensure that the top of the expansion tube is on the same level as the floor.

2. Use a vacuum cleaner to clear the dust inside and around the holes. If the inter-hole spacing is too wide or too narrow, locate and drill holes again.

3. Tighten the expansion bolt slightly, and then put the expansion bolt assembly into the hole vertically.

4. Use a rubber mallet to hammer the expansion bolt until the expansion tube is buried into the hole.

5. Remove the M12x60 bolt, spring washer, and flat washer from each expansion bolt assembly in sequence.

Figure 8-9 Drilling a hole and installing an expansion bolt assembly

(1) M12x60 bolt

(2) Spring washer (3) Flat washer (4) Expansion tube

Step 3 Install the base and adjust the base level.

1. Place the insulating spacer and the base on the floor, align the mounting holes in the base and in the insulating spacers with the holes of the expansion bolts in the floor, and then use four M12x60 bolts to secure the base, as shown in Figure 8-10.

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8 Installing the Cabinet

Figure 8-10 Fixing the base

(1) M12x60 bolt (2) Spring washer (3) Flat washer

(4) Insulating washer (5) Insulating spacers -

2. Place the level on the top plane of the base to check the base level, as shown in Figure

8-11. If the bubble is not in the middle of the level, adjust the base level through the adjusting

bolts.

Figure 8-11 Checking the base level

(1) Adjusting bolt

(2) Level

Step 4 Test the insulation between the base and the expansion bolt.

1. Set the multimeter to the megohm position (MΩ).

2. Measure the resistance between the base and the four expansion bolts, as shown in Figure

8-12.

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8 Installing the Cabinet

Figure 8-12 Measuring the resistance between the base and the expansion bolt

l If the resistance is less than five megohms, you can infer that the base is not insulated

from the floor. Go to step 4.c.

l If the resistance is greater than or equal to five megohms, you can infer that the base is

insulated from the floor. End the test.

3. Disassemble the expansion bolt assembly, and check whether insulating washers are missed or damaged.

l If insulating washers are missed or damaged, reinstall them, and then adjust the base

level.

l If no insulating washers are missed or damaged, check whether the multimeter is faulty

or whether the setting is correct.

Step 5 Slide the cabinet along the base to ensure that the back of the cabinet is aligned with the back

of the base. Use a torque wrench to tighten the two bolts in the front of the cabinet until the fastening torque reaches 45 N·m, as shown in Figure 8-13.

Figure 8-13 Installing the cabinet

----End

8.3 Installing a Cabinet with Base on an ESD Floor

This section describes the procedure and precautions for installing the base and the cabinet on the ESD floor.

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Prerequisites

Context

8 Installing the Cabinet

A marker, a level, a multimeter, and a vacuum cleaner are available.

A rubber mallet, a hammer drill (Φ16), a screwdriver and a torque wrench are available.

Figure 8-14 shows the support for installing the ESD floor.

Figure 8-14 Support for installing the ESD floor

(1) Mounting holes for the ESD floor (2) Frames (3) Mounting hole for the concrete

floor

The support for installing the ESD floor on which the cabinet is installed is of two types: support with fixed height and support with adjustable height. Table 8-1 lists the relations between the two types of supports and the height of the ESD floor.

Table 8-1 Height of the support for installing the ESD floor

Type of the Support Height of the ESD Floor (Unit: mm)

Support with fixed height 296 to 495

Support with adjustable

At least 120; adjustable according to the height of the floor

height

NOTE

Height of the ESD floor refers to the spacing between the concrete floor and the upper surface of the ESD floor.

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BTS3900L (Ver.C) Installation Guide 8 Installing the Cabinet

Procedure

Step 1 Determine the installation position of the cabinet on the ESD floor. See Step 1 in the section

Installing a Cabinet with Base on a Concrete Floor.

Step 2 Drill holes on the ESD floor.

1. Use a hammer drill with bit 16 to drill holes at the anchor points. The holes should penetrate the ESD floor, as shown in Figure 8-15.

Figure 8-15 Drilling a hole on the ESD floor

(1) ESD floor

CAUTION

Take proper safety measures to protect your eyes and respiratory tract against the dust before drilling holes.

2. Use a vacuum cleaner to clear the dust inside and around the holes. If the inter-hole spacing is too wide or too narrow, locate and drill holes again.

Step 3 Position the support.

1. Place the support under the ESD floor, and then use bolts to secure the ESD floor on the support temporarily, as shown in Figure 8-16.

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8 Installing the Cabinet

Figure 8-16 Positions of the access holes in the support and holes in the ESD floor

(1) Mounting holes for the ESD floor (2) ESD floor (3) Mounting hole for the concrete floor

2. Mark the positions of the mounting holes on the concrete floor, as shown in Figure 8-17.

Figure 8-17 Marking the positions of the mounting holes

(1) Mounting hole for the concrete floor

(2) Concrete floor

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Step 4 Drill holes at the anchor points on the concrete floor, and then install expansion bolt assemblies.

Step 5 Secure the support for installing the ESD floor.

8 Installing the Cabinet

3. Use a measuring tape to measure the inter-hole spacing, and ensure that the four holes serve as the vertices of a rectangle.

For details, see Step 2 in the section Installing a Cabinet with Base on a Concrete Floor.

Use M12x60 bolts, spring washers, and flat washers to secure the support for installing the ESD floor on the concrete floor. Tighten the bolts until the fastening torque reaches 45 N·m. Figure

8-18 shows how to secure the support for installing the ESD floor.

Figure 8-18 Securing the supports for installing the ESD floor

(1) M12x60 bolt

(2) Spring washer (3) Flat washer

Step 6 Remove the bolts secured temporarily according to Step 3.a.

Step 7 Install the base and adjust the base level.

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Figure 8-19 Fixing the base

(1) M12x60 bolt (2) Spring washer (3) Flat washer

(4) Insulating washer (5) Insulating spacers -

2. Place the level on the top plane of the base to check the base level, as shown in Figure

8-20. If the bubble is not in the middle of the level, adjust the base level through the adjusting

bolts.

Figure 8-20 Checking the base level

(1) Adjusting bolt

(2) Level

Step 8 Test the insulation between the base and the expansion bolt.

1. Set the multimeter to the megohm position (MΩ).

2. Measure the resistance between the base and the four expansion bolts, as shown in Figure

8-21.

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8 Installing the Cabinet

Figure 8-21 Measuring the resistance between the base and the expansion bolt

l If the resistance is less than five megohms, you can infer that the base is not insulated

from the floor. Go to step 4.c.

l If the resistance is greater than or equal to five megohms, you can infer that the base is

insulated from the floor. End the test.

3. Disassemble the expansion bolt assembly, and check whether insulating washers are missed or damaged.

l If insulating washers are missed or damaged, reinstall them, and then adjust the base

level.

l If no insulating washers are missed or damaged, check whether the multimeter is faulty

or whether the setting is correct.

Step 9 Slide the cabinet along the base to ensure that the back of the cabinet is aligned with the back

of the base. Use a torque wrench to tighten the two bolts in the front of the cabinet until the fastening torque reaches 45 N·m, as shown in Figure 8-22.

Figure 8-22 Installing the cabinet

----End

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Prerequisites

9 Installing a PGND Cable

The PGND cable is used to connect the PGND screws on the cabinet and the ground bar to ensure proper grounding of the cabinet.

Context

Procedure

Step 1 Prepare a PGND cable.

Tools, such as a Phillips screwdriver, cable cutter, and multi-purpose crimping tool, are ready.

The following table lists the specifications of a PGND cable.

Table 9-1 Specifications of a PGND cable

Cable Connector Cross-Sectional

Area

PGND cable OT terminal (M8)

l 1x160 A: 25

mm2 (0.039 in.2)

l 2x80 A: 16 mm

(0.025 in.2)

Color

Green and yellow

1. Cut the PGND cable to the required length according to the actual cable route.

2. Add an OT terminal to each end of the cable by referring to Assembling the OT Terminal and the Power Cable.

Step 2 Install the PGND cable.

1. Connect one end of the PGND cable to the ground bar on the internal panel inside the BTS3900L, and then use screws to secure the OT terminals of the PGND cable, as shown in Figure 9-2.

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9 Installing a PGND Cable

NOTE

When installing a PGND cable, tightly press the OT terminal properly, as shown in Figure 9-1.

Figure 9-1 Installing an OT terminal

2. Connect the other end of the PGND cable to the external ground bar, as shown in Figure

9-2.

Figure 9-2 Installing the PGND cable

(1) OT terminal (M8)

(2) External ground bar

Step 3 Lay out the cable by referring to 11.1 Cabling Requirements, and then use cable ties to bind

the cable.

Step 4 Label the cables by referring to Attaching a Cable-Tying Label.

----End

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BTS3900L (Ver.C) Installation Guide 10 (Optional) Installing the Modules

10 (Optional) Installing the Modules

About This Chapter

The mandatory modules in the cabinet are already installed. The optional modules can be installed on site according to different field requirements.

10.1 Installing the GPS surge protector

This section describes the procedure and precautions for installing the GPS surge protector.

10.2 Installing the GATM and Bias-Tee

This describes the procedures and precautions for the installation of the GATM and Bias-Tee when they are used together with the DRFU.

10.3 Installing the DCDU-11B

When an indoor base station is configured with both RFUs and RRUs, a DCDU-11B (DCDU for short) can be installed on a wall and its power cables can be connected to supply power to RRUs.

10.4 Installing the BBU Case

This section describes the procedure for installing a BBU case.

10.5 Installing the BBU Components

This section describes how to install the boards into the BBU and SLPU.

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10.1 Installing the GPS surge protector

This section describes the procedure and precautions for installing the GPS surge protector.

Context

NOTE

A satellite card needs to be installed onsite only for a USCU that supports the dual-satellite mode.

Procedure

Step 1 Optional: Loosen the two M3 screws on the panel, and then pull out the USCU, as shown in

Figure 10-1.

Figure 10-1 Removing the USCU.

10 (Optional) Installing the Modules

Step 2 Optional: Install a satellite card on the USCU, as shown in Figure 10-2.

1. Remove the three M1.6 screws from the USCU.

2. Align the mounting holes on the satellite card with the bolts on the USCU.

3. Tighten the three M1.6 screws that were removed in Step 2.1 to 0.1 N·m.

4. Connect one end of the RF jumper to the RF port on the satellite card and the other end to the GPS port on the USCU.

NOTICE

There are six mounting holes on the satellite card. You need to install only three screws on the receiver, as shown in Figure 10-2

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Figure 10-2 Installing the satellite card on the USCU

(1) Satellite card (2) RF jumper

Step 3 Optional: Install the USCU equipped with the satellite card into the BBU, and tighten the screws

on the USCU to 0.6 N·m.

Step 4 Install one end of the GPS clock signal cable at the top of the cabinet and connect the other end

to the GPS port on the USCU, as shown in Figure 10-3.

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Figure 10-3 Installing the GPS clock signal cable

Step 5 Install the GPS surge protector, as shown in Figure 10-4.

Figure 10-4 Installing the GPS surge protector

NOTE

The figure of the GPS surge protector is for reference only. The actual appearance may be different.

Step 6 Install the GPS jumper, as shown in Figure 10-5.

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Step 7 Route the cable by referring to 11.1 Cabling Requirements and Cable Routes.

10 (Optional) Installing the Modules

Figure 10-5 Installing the GPS jumper

Step 8 Attach labels to the installed cables. For details, see Labeling Signal Cables.

----End

10.2 Installing the GATM and Bias-Tee

This describes the procedures and precautions for the installation of the GATM and Bias-Tee when they are used together with the DRFU.

Context

The Bias-Tee couples the DC power or OOK signals into the feeder. The GATM is connected to the antenna through the Bias-Tee. If the DRFU is configured, the GATM and Bias-Tee must be configured.

Figure 10-6 shows the cable connection ports of the straight DIN Bias-Tee. Table 10-1 describes

the cable connection of the straight DIN Bias-Tee.

Figure 10-6 Cable connection ports of the straight DIN Bias-Tee

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Table 10-1 Cable connections of the straight DIN Bias-Tee

No. Cable Connection

1 Connected to the feeder of the antenna system.

2 Port for the Bias-Tee and RET control signals. Connected to the ports from

ANT0 to ANT5 on the GATM.

3 Connected to the PGND cable.

4 Connected to the jumper of the base station.

Figure 10-7 shows the cable connections of the GATM and the straight DIN Bias-Tee.

Figure 10-7 Cable connections

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Procedure

Step 1 Connect the GND port on the straight DIN Bias-Tee to the ground bar of the antenna through

Step 2 Connect the ANT port on the straight DIN Bias-Tee to the 7/8" feeder.

Step 3 Connect the DC/OOK port on the Bias-Tee to the ports from ANT0 to ANT5 on the GATM

Step 4 Connect the BTS port on the Bias-Tee to the RF output port on the RFU through the 1/2" jumper,

10 (Optional) Installing the Modules

the PGND cable, and then fix the straight DIN Bias-Tee on the cable tray.

through the RET control signal cable.

as shown in Figure 10-8.

Figure 10-8 Installing the straight DIN Bias-Tee

(1) Indoor ground bar

(4) 1/2" jumper (5) RET control signal cable (6) GATM

(2) Ground bar for the antenna (3) 7/8" feeder

Step 5 Attach color rings to the RF jumper by referring to Attaching the Color Ring.

----End

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10.3 Installing the DCDU-11B

When an indoor base station is configured with both RFUs and RRUs, a DCDU-11B (DCDU for short) can be installed on a wall and its power cables can be connected to supply power to RRUs.

Context

A DCDU-11B supports -48 V DC power input. The following table lists the specifications of DCDU-11B power cables.

Table 10-2 Specifications of DCDU-11B power cables

Cable One End The Other End Remar

Procedure

Step 1 Use four M6x12 screws to secure the mounting ears on the wall and those on the DCDU, and

DCDU-11B power cable

NOTE

The colors and structures of cables vary according to countries and regions. If cables are purchased locally, the cables must comply with local rules and regulations.

tighten the screws to 3 N·m (26.55 lbf·in.), as shown in the following figure.

Figure 10-9 Securing the mounting ears on the wall and those on the DCDU

RTN(+) wire

NEG(-) wire

OT terminal (M6, 16 mm2 or 0.025 in.2)

Depending on the external equipment

Black

Blue

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Step 2 Place the DCDU against the wall, and use a marker to mark the holes for installing screws

10 (Optional) Installing the Modules

securing mounting ears, as shown in the following figure.

Figure 10-10 Marking the positions for installing screws securing mounting ears of the DCDU

Step 3 Drill holes at the anchor points and install expansion bolt assemblies in the holes, as shown in

the following figure.

Figure 10-11 Drilling a hole and inserting an expansion bolt assembly

(1) M6x60 bolts

(2) Nut (3) Spring washer (4) Flat washer (5) Expansion tube

1. Use a hammer drill with a Φ8 bit to drill holes vertically at the marked anchor points. Ensure that the depth of each hole ranges from 50 mm (1.97 in.) to 60 mm (2.36 in.).

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CAUTION

Take proper safety measures to protect your eyes and respiratory tract against the dust before drilling holes.

2. Use a vacuum cleaner to clear the dust out from inside and around the holes, and measure the distances between holes. If any of the hole is beyond the acceptable range, mark a new anchor point and drill a new hole.

3. Tighten an expansion bolt slightly and place it vertically into each hole.

4. Use a rubber mallet to pound the expansion bolt assembly until it goes into the hole completely. The expansion bolt must protrude 20 mm (0.79 in.) from the wall.

5. Remove the M6x60 bolt, nut, spring washer, and flat washer in sequence.

NOTICE

After dismantling an expansion bolt assembly, ensure that the top of the expansion tube is level with the wall. Otherwise, the DCDU cannot be installed on the wall evenly and securely.

Step 4 Tightly press the DCDU against the wall with the front panel facing the right and the power port

facing downwards. Then use a torque wrench to tighten the four M6x60 screws on the wallmounting ears for the DCDU to 5 N·m (44.25 lbf·in.), as shown in the following figure.

Figure 10-12 Installing the DCDU

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Step 5 Prepare a PGND cable for the DCDU.

Step 6 Connect one end of the PGND cable for the DCDU to the ground terminal on the DCDU and

10 (Optional) Installing the Modules

1. Cut the cables to the length suitable for the actual cable route.

2. Add OT terminals to both ends of the cables according to the instructions in Assembling the OT Terminal and the Power Cable.

the other end to the external ground bar, as shown in the following figure.

Figure 10-13 Installing a PGND cable for the DCDU

Step 7 Prepare DCDU power cables.

1. Cut the cables to the length suitable for the actual cable route.

2. Add OT terminals to both ends of the cables according to the instructions in Assembling the OT Terminal and the Power Cable.

Step 8 Install the DCDU power cables, as shown in the following figure.

1. Remove the protective cover for the external terminal block from the DCDU.

2. Connect the OT terminals at one end of the DCDU power cables to the NEG(-) and RTN (+) terminals on the DCDU and secure the OT terminals to 4.8 N·m (42.48 lbf·in.).

3. Connect the OT terminals at the other end of the DCDU power cables to the external power equipment.

4. Reinstall the protective cover and secure it to 0.3 N·m (2.655 lbf·in.).

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Figure 10-14 Installing the DCDU power cables

Step 9 Lay out the cables according to the instructions in Cabling Requirements, and use cable ties to

bind them.

Step 10 Label the installed cables according to the instructions in Attaching a Cable-Tying Label.

----End

10.4 Installing the BBU Case

This section describes the procedure for installing a BBU case.

Procedure

Step 1 Align mounting holes on the cable holders with mounting holes on both sides of the BBU case,

and then use two M4 screws on each side to secure the cable holes to 1.2 N·m, as shown in

Figure 10-15.

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Step 2 Slide the BBU along the guide rails into the cabinet, and then tighten four M6x16 screws on the

10 (Optional) Installing the Modules

Figure 10-15 Installing cable holders on the BBU

panel to 3 N·m (26.55 lbf·in.), as shown in Figure 10-16.

Figure 10-16 Installing the BBU case

----End

10.5 Installing the BBU Components

This section describes how to install the boards into the BBU and SLPU.

Context

NOTE

This chapter only describes the procedure for installing components in the BBU. For details about the slots where the BBU components are installed, see the BBU configuration information.

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Take correct ESD prevention measures, such as wearing an ESD wrist strap or ESD gloves, to avoid static damage to boards, modules, and electronic components.

Operation Rules

l When moving a board, hold the board with both hands, as shown in Figure 10-17.

10 (Optional) Installing the Modules

CAUTION

Figure 10-17 Incorrect and correct operations for moving a board

l When installing a board, hold the front panel with one hand and support the edge of the

board with the other hand to insert it into the slot. Do not use only one hand to hold the board or apply pressure to the edge of the board. Figure 10-18 shows correct and incorrect operations.

Figure 10-18 Incorrect and correct operations for supporting a board for installation

l When inserting a board into a slot, keep the board on the same plane as the slot. Do not

bend the board or insert it at an angle. Figure 10-19 shows correct and incorrect operations.

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Figure 10-19 Incorrect and correct operations for inserting a board

CAUTION

l Exercise cautions when holding and placing boards to avoid collision or scratches. Do not

stack or deform boards after they are unpacked.

l When inserting a board, ensure that it does not collide with the subrack and is properly

installed.

Installing the boards into the BBU

Figure 10-20 uses the WMPT and UPEU as examples to illustrate how to install boards in the

BBU.

1. Loosen the screws on the filler panels in the installation slots, and then remove the filler panels from the slots.

2. If there are ejector levers on the panel, raise them.

3. Gently slide the board into the slot.

4. If there are ejector levers on the panel, close them.

5. Tighten the captive screws on both sides of the panel to 0.6 N·m (5.31 lbf·in.).

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Figure 10-20 Installing the boards into the BBU

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About This Chapter

11 Installing the Cables

The cables in the BTS3900L cabinet are already installed. You need to install only the cables led into the cabinet and cables for optional components.

11.1 Cabling Requirements

Cables must be routed according to the specified cabling requirements to prevent signal interference.

11.2 Cable Routes

The cables in the BTS3900L cabinet must be routed according to the cabling requirements and must be bound by using cable ties.

11.3 Installing the Power Cables

This chapter describes the procedures for installing the power cables and precautions to be taken during the procedures in the standard power scenario and small configuration scenario.

11.4 Installing a BBU Power Cable

This section describes the procedure for installing a BBU power cable in a cabinet.

11.5 (Optional) Installing RRU Power Cables

When an indoor base station is configured with both RFUs and RRUs, RRU power cables need to be installed to feed power into RRUs.

11.6 Installing the Transmission Cables

The E1/T1 cable or FE/GE cable can be used for data transmission according to the transmission mode of the base station. Only one transmission mode can be supported by the base station working in the GSM standard, and two transmission modes can be supported by the base station working in the UMTS standard.

11.7 Installing the Monitoring Signal Cables

This section describes the procedure for installing monitoring signal cables and provides important notes about the installation.

11.8 Installing an RF Jumper

An RF jumper connects an RFU to the antenna system for signal exchange between a base station and the antenna system.

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11.9 Installing the CPRI Cable

The CPRI electrical cable between RF module and the BBU is used to transmit the CPRI signals between the RF module and the BBU.

11.10 (Optional)Installing a CPRI Optical Fiber

A CPRI fiber optic cable transmits CPRI signals between a BBU and an RRU.

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11.1 Cabling Requirements

Cables must be routed according to the specified cabling requirements to prevent signal interference.

NOTE

If a cable listed below is not required, skip the routing requirements of the cable.

General Cabling Requirements

Requirements for Bending Radius

l The bending radius of the 7/8'' feeder must be more than 250 mm (9.84 in.), and the bending

radius of the 5/4'' feeder must be more than 380 mm (14.96 in.).

l The bending radius of the 1/4'' jumper must be more than 35 mm (1.38 in.). The bending

radius of the super-flexible 1/2'' jumper must be more than 50 mm (1.97 in.), and the bending radius of the ordinary 1/2'' jumper must be more than 127 mm (5 in.).

l The bending radius of the power cable or PGND cable must be at least three times the

diameter of the cable.

11 Installing the Cables

l The bending radius of a fiber optic cable is at least 20 times the diameter of the fiber optic

cable, and the minimum bending radius of the breakout cable at each end of the fiber optic cable is 30 mm (1.18 in.).

l The bending radius of the E1/T1 cable must be at least three times the diameter of the cable.

l The bending radius of the signal cable must be at least five times the diameter of the cable.

Requirements for Cable Binding

l The same types of cable must be bound together.

l Different types of cable must be separately routed with the minimum spacing of 30 mm

(1.18 in.) and cannot be entangled.

l The cables must be bound tightly and neatly. The sheaths of the cables must not be damaged.

l Cable ties are installed in the same direction, and those at the same horizontal line must be

in a straight line.

l The excess of indoor cable ties is trimmed off, and the excess of outdoor cable ties allows

about 5 mm (0.2 in.), without remaining rough edges.

l Labels or nameplates must be attached to both ends, joints, or turns of cables after they are

installed.

Security Requirements

l Cables should be placed away from sharp objects or wall burrs. If these positions are

inevitable, protect the cables with protection pipes.

l Cables must be routed away from heat sources, or heat-insulation materials are added

between cables and heat sources.

l Sufficient slack (recommended for about 0.1 m [0.33 ft]) is provided in cables at turns or

the position close to a device, facilitating cable and device maintenance.

Indoor Cabling Requirements

l Cables are routed indoors through the feeder window.

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l Drip loops must be made outside the feeder window, and the requirements for the minimum

bending radius are met.

l When cables are routed indoors, engineers are required indoors for cooperation.

l The feeder window must be waterproofed.

Outdoor Cabling Requirements

l Cables routed outdoors must be led through a pipe when they may be damaged.

l AC power cables, transmission cables, and cables buried in the ground must be protected.

l If cables at the cabinet bottom need to be routed through a pipe along the ground, lead the

pipe into the cabinet base for about 30 mm (1.18 in.) to 50 mm (1.97 in.), not into the cabinet. Block the pipe with waterproof tape or silicon gel, and secure the pipe to the cable hole at the cabinet bottom with metal piece.

l If cables at the cabinet bottom need to be routed through a pipe along the metal cable trough,

do not lead the pipe into the cabinet base. The cable trough must be sealed and routed through the cable hole at the cabinet bottom.

l When routing RRU cables, ensure that the highest positions of the routes of all RRU cables

(except RF cables and AISG cables) must be lower than the bottom of the RRU.

l Cables are secured with cable clips.

l Cables are routed neatly along the specified cabling direction and secured with cable clips.

l The positions for cable clips are determined onsite. For example, the cable clips for the

7/8" feeder are installed at the spacing of 1.5 m (4.92 ft) to 2 m (6.56 ft) in the same direction, and the cable clips for the power cables are installed at the spacing of 1.5 m (4.92 ft) to 2 m (6.56 ft) in the same direction.

l Cable clips must be vertical with cables, and the cables in a cable clip must be parallel.

l After routing cables neatly and correctly, tighten the screws on cable clips.

Secure cables on the cable tray, as shown in Figure 11-1.

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Figure 11-1 Securing cables on the cable tray

Secure cables on the tower, as shown in Figure 11-2.

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Figure 11-2 Securing cables on the tower

Special Cabling Requirements

Cabling Requirements for Power Cables

l Power cables must be installed in the position specified in engineering design documents.

l If the length of power cables is insufficient, replace the cables rather than adding connectors

or soldering joints to lengthen the cables.

l Cables must be routed by only qualified and trained personnel before all preparations are

made.

l Cables are routed in an untangled and orderly fashion.

l If DC power cables need to be routed on the tower platform, lay out the cables on the

guardrail with the shortest distance and route the cables along the guardrail.

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l If DC power cables need to be routed close to a device on the tower, secure the cables to

the guardrail or pole with cable clips. The device cannot be far away from the position for securing the cables.

Cabling Requirements for PGND Cables

l PGND cables for the base station must be connected to the same ground bar.

l PGND cables must be buried in the ground or routed indoors. They should not be routed

overhead before they are led into the equipment room.

l The exterior of the coaxial wire and the shield layer of the shielded cable must have proper

electrical contact with the metal surface of the equipment to which they are connected.

l PGND cables and signal cables must be installed in an untangled and orderly fashion. A

certain distance must be reserved between them to prevent interference from each other.

l Fuses or switches must not be installed on the PGND cables.

l Other devices must not be used for electrical connections of the PGND cables.

l All the metal parts in the housing of the equipment must be reliably connected to the ground

terminal.

Cabling Requirements for E1 Cables

l E1 cables must not cross power cables, PGND cables, or RF cables when routed. If

transmission cables are routed with power cables, PGND cables, or RF cables in parallel, the spacing between them must be greater than 30 mm (1.18 in.).

l E1 cables are routed straightly and bound neatly with cable ties.

l Sufficient slack is provided in E1 cables at turns.

l E1 cables cannot be squeezed by the cabinet door when routed through the cabinet, as

shown in Figure 11-3.

Figure 11-3 E1 cables routed through the cabinet

Cabling Requirements for Fiber Optic Cables

l Fiber optic cables must be routed by at least three qualified and trained personnel before

all preparations are made.

l Fiber optic cables are used within the temperature range of -40°C to 60°C. If the current

temperature is out of the range, make protection measures or route the cables again.

l Cables are routed in an untangled and orderly fashion.

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l Do not bind fiber optic cables at turns.

l Do not stretch, step on, or place heavy objects on fiber optic cables. Keep the cables away

from sharp objects.

l When fiber optic cables are routed, the excess of the cables must be coiled around special

devices, such as a fiber coiler.

l An unarmored fiber optic cable must be bound using binding straps. If a fiber optic patch

cord needs to be secured in a cabinet or a piece of equipment, use binding straps to bind it and then use cable ties to secure the binding straps to the cabinet or equipment. Ensure that the fiber optic cables can flexibly move in the cable ties. Do not bend the fiber optic cables sharply. The following figure shows how to bind the fiber optic cables correctly.

Figure 11-4 Binding fiber optic cables

l When coiling fiber optic cables, apply even strength. Do not bend the cables with force.

l Vacant optical connectors must be covered with dustproof caps.

l Fiber optic cables cannot be squeezed by the cabinet door when routed through the cabinet,

as shown in Figure 11-5, Figure 11-6 and Figure 11-7.

Figure 11-5 CPRI fiber optic cables routed through the cabinet (1)

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Figure 11-6 CPRI fiber optic cables routed through the cabinet (2)

Figure 11-7 FE/GE cables routed through the cabinet

l If fiber optic cables need to be routed on the tower platform, lay out the cables on the

guardrail with the shortest distance and route the cables along the guardrail.

l If fiber optic cables need to be routed close to a device on the tower, secure the cables to

the guardrail or pole with cable clips. The device cannot be far away from the position for securing the cables.

l If the fiber optic cables close to a device are too long, coil the excess of the cables and

secure them on the tower.

11.2 Cable Routes

The cables in the BTS3900L cabinet must be routed according to the cabling requirements and must be bound by using cable ties.

l Route the PGND cables along the left side inside the cabinet.

l Route six jumpers along the left side inside the lower compartment near the door.

l Route the input power cable along the left side inside the cabinet.

l Route six jumpers along the right side inside the lower cabinet near the door.

l Route the transmission cables along the cabling space on the right side outside the cabinet.

l Route the jumpers in the upper cabinet out of the cabinet from the top.

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Figure 11-8 shows the cable routes in the cabinet.

Figure 11-8 Cable routes

Binding Cables

(a) PGND cable and the lower DCDU input power cable

(d) CPRI fiber optic cable (e) Not defined (f) Transmission cables and signal

(g) Jumpers on the right side (h) Not defined (i) Jumpers in the lower

(b) Jumpers on the left side (c) The upper DCDU input power

cable in the capacity expansion scenario

cables

compartment

Bind the cables according to the routes in Figure 11-8 and methods in Figure 11-9 and Figure

11-10.

NOTE

Locate the cables around the binding bracket according to the figures showing the spatial positions of the cables. Bind the cables to the nearest points on the binding bracket.

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Figure 11-9 Binding cables on the left side

(1) PGND cable (2) Jumpers on the left side (3) DCDU input power cables in the

capacity expansion scenarios

(4) DCDU input power cable (5) CPRI fiber optic cable -

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Figure 11-10 Binding cables on the right side

(1) Transmission cables and signal cables

(3) Jumpers on the right side (4) Not defined

(2) CPRI fiber optic cable

11.3 Installing the Power Cables

This chapter describes the procedures for installing the power cables and precautions to be taken during the procedures in the standard power scenario and small configuration scenario.

11.3.1 Standard Powering Scenario

In the case of full configuration with 12 RFUs, connect the input power cables and supply the power to the cabinet.

Context

By default, 2 X 160A or 4 X 80A should be provided for BTS3900L(Ver.C) cabinet, as shown in Figure 11-11.

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Figure 11-11 Standard Powering Scenario

Procedure

Step 1 Measure the distance between the DCDU-11A and the external power supply equipment

Step 2 Add an M6 OT terminal to one end of the power cables. For details, see Assembling the OT

Step 3 Remove the protective cover from the terminal block of the DCDU-11A.

Step 4 Connect the blue cable to the wiring terminal labeled NEG(-) and black cable to the wiring

Step 5 Use a screwdriver to tighten the screws on the wiring terminals.

Step 6 Install the protective cover, and then use a screwdriver to tighten the screws.

according to the actual cable route, and then prepare power cables of a proper length.

Terminal and the Power Cable.

terminal labeled RTN(+).

Figure 11-12 shows the installation process.

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Figure 11-12 Installing the input power cable

Step 7 Route the cables by referring to 11.1 Cabling Requirements and 11.2 Cable Routes.

Step 8 Label the cables by referring to Attaching a Cable-Tying Label.

----End

11.3.2 Small Configuration Scenario I: 2x80A in Upper and Lower Shelves

In this scenario, two 80A input power cables are used for upper and lower shelves.

Context

Its typical scenarios include:

l 3 large-power modules + 3 large-power modules + 1 or 2 BBUs, and RFUs in upper and

lower shelves.

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l 3 large-power modules + 3 small-power modules + 1 or 2 BBUs, and RFUs in upper and

lower shelves.

l 3 large-power modules + 1 or 2 BBUs, and RFUs in uppoer or lower shelf.

NOTE

Two 80A air switches, one of them for upper or lower DCDU.

Figure 11-13 shows the small configuration scenarios.

Figure 11-13 Small Configuration Scenario I

Procedure

Step 1 Measure the distance between the DCDU-11A and the external power supply equipment

Step 2 Add an M6 OT terminal to one end of the power cables. For details, see Assembling the OT

Step 3 Remove the protective cover from the terminal block of the DCDU-11A.

Step 4 Connect the blue cable to the wiring terminal labeled NEG(-) and black cable to the wiring

Step 5 Use a screwdriver to tighten the screws on the wiring terminals.

Step 6 Install the protective cover, and then use a screwdriver to tighten the screws.

according to the actual cable route, and then prepare power cables of a proper length.

Terminal and the Power Cable.

terminal labeled RTN(+).

Figure 11-14 shows the installation process.

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Figure 11-14 Installing the Input Power Cables

Step 7 Route the cables by referring to 11.1 Cabling Requirements and 11.2 Cable Routes.

Step 8 Label the cables by referring to Attaching a Cable-Tying Label.

----End

11.3.3 Small Configuration Scenario II: 2x80A in Lower Shelf in Parallel

In this scenario, two 80A input power cables are connected to DCDU in the lower shelf and an BBU is powered by the DCDU in the lower shelf via 1.3m power cable.

Context

The typical scenario includes:

l 6 large-power modules + 1 BBU, and RFUs in lower shelf.

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l 3 large-power modules + 3 small-power modules + 1 BBU, and an RFU in lower shelf.

NOTE

The BBU connection should be restored if there is a future extension. That is, the BBU should be powered from DCDU in the upper shelf (1.3m power cable).

Figure 11-15 shows the small configuration scenario.

Figure 11-15 Small configuration scenario II

NOTE

In this scenario, the fan assembly in the upper subrack does not need to be powered on, and therefore it does not need to be connected to any power cable.

Procedure

Step 1 Connect two 80A input cables to DCDU in the lower shelf.

1. Measure the distance between the DCDU-11A and the external power supply equipment according to the actual cable route, and then prepare power cables of a proper length.

2. Add an M6 OT terminal to one end of the power cables. For details, see Assembling the OT Terminal and the Power Cable.

3. Remove the protective cover from the terminal block of the DCDU-11A.

4. Connect the blue cable to the wiring terminal labeled NEG(-) and black cable to the wiring terminal labeled RTN(+).

5. Use a screwdriver to tighten the screws on the wiring terminals.

6. Install the protective cover, and then use a screwdriver to tighten the screws.

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Figure 11-16 shows the installation process.

Figure 11-16 Installing two input power cables in the lower shelf

Step 2 Connect the cable that supplies the power to BBU from DCDU in the lower shelf.

1. Choose a cable with length 1.3m and diameter 35mm2 (one end is tool-less female power connector (pressfit type) and the other end is 3V3 power connector).

2. Check whether the circuit breakers labelled SW7 and SW8 on DCDU-11A are set to OFF.

3. Connect one end to PWR port on UPEU in BBU in the upper shelf and connect the other end to LOAD7 or LOAD8 port on DCDU-11A in the lower shelf, as shown in Figure

11-17.

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Figure 11-17 Installing the power cable for BBU in the upper shelf

Step 3 Route the cables by referring to 11.1 Cabling Requirements and 11.2 Cable Routes.

Step 4 Label the cables by referring to Attaching a Cable-Tying Label.

----End

11.3.4 Small Configuration Scenario III: 2x80A in Upper Shelf in Parallel

In this scenario, two 80A input power cables are connected to DCDU in the upper shelf and the fan box in the lower shelf is powered from the DCDU in the upper shelf.

Context

Its typical scenarios include:

l 6 large-power modules + 1 BBU in the upper shelf.

l 3 large-power modules + 3 small-power modules + 1 BBU in the upper shelf.

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NOTE

If extension in future, the fan box in the lower shelf should be restored to get the power from DCDU in the lower shelf.

Figure 11-18 shows the small configuration scenario.

Figure 11-18 Small configuration scenario III

Procedure

Step 1 Connect two 80A input cables to DCDU in the upper shelf.

1. Measure the distance between the DCDU-11A and the external power supply equipment according to the actual cable route, and then prepare power cables of a proper length.

2. Add an M6 OT terminal to each end of the power cables. For details, see Assembling the OT Terminal and the Power Cable.

3. Remove the protective cover from the terminal block of the DCDU-11A.

4. Connect the blue cable to the wiring terminal labeled NEG(-) and black cable to the wiring terminal labeled RTN(+).

5. Use a screwdriver to tighten the screws on the wiring terminals.

6. Install the protective cover, and then use a screwdriver to tighten the screws.

Figure 11-19 shows the installation process.

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Figure 11-19 Installing two input power cables in the upper shelf

Step 2 Connect the cable that supplies the power to the fan box from DCDU in the upper shelf.

1. Choose the cable with length 1.3m and diameter 35mm2.

2. For the cable, one end is easy power connector (EPC) and the other end is 3V3 power connector.

3. Check whether the circuit breakers labelled SW9 on DCDU-11A is set to OFF.

4. Connect one end to PWR port on the fan box and connect the other end to LOAD9 port on DCDU-11A in the upper shelf, as shown in Figure 11-20.

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Figure 11-20 Installing the power cable for the fan box in the lower shelf

Step 3 Route the cables by referring to 11.1 Cabling Requirements and 11.2 Cable Routes.

Step 4 Label the cables by referring to Attaching a Cable-Tying Label.

----End

11.4 Installing a BBU Power Cable

This section describes the procedure for installing a BBU power cable in a cabinet.

Procedure

Step 1 Check whether the circuit breakers labeled SW7 and SW8 on the DCDU-11A are set to OFF.

Step 2 Connect one end of a BBU power cable to the -48 V port on each UPEU.

Step 3 Connect the other end of a BBU power cable to the LOAD7 and LOAD8 ports on the

DCDU-11A, as shown in Figure 11-21.

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Figure 11-21 Installing a BBU power cable

----End

11.5 (Optional) Installing RRU Power Cables

When an indoor base station is configured with both RFUs and RRUs, RRU power cables need to be installed to feed power into RRUs.

Context

The following table lists the specifications of RRU power cables.

Table 11-1 Specifications of RRU power cables

Base Station Power Device One End The Other End

BTS3900 (Ver.B) and BTS3900L (Ver.B)

BTS3900 (Ver.C) and BTS3900L (Ver.C)

NOTE

DCDU-03B OT terminal (M4) Depending on the

DCDU-11B Tool-less female

connector (pressfit type)

port on the RRU

l The colors and structures of cables vary according to countries and regions. If cables are purchased

locally, the cables must comply with local rules and regulations.

l The type of connector connecting to the power port on the RRU depends on the type of the RRU. For

details about how to add a connector to an RRU power cable, see the related RRU installation guide.

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Procedure

Step 1 Prepare RRU power cables.

Step 2 Add a correct connector to the RRU power cable on the RRU side and connect the connector to

11 Installing the Cables

1. Cut the power cable to lengths suitable for the actual cable routes.

2. Add connectors to the RRU power cables on the DCDU side.

l For details about how to add connectors to RRU power cables for a BTS3900 (Ver.B)

or BTS3900L (Ver.B), see Assembling the OT Terminal and the Power Cable.

l For details about how to add connectors to RRU power cables for a BTS3900 (Ver.C)

or BTS3900L (Ver.C), see Assembling the Tool-Less Female Connector (Pressfit Type) and the Power Cable(2).

the power port on the RRU. For details, see the related RRU installation guide.

CAUTION

Ensure that the RRU power cable for an RRU added to a running base station must be connected to the RRU first and then to the power equipment. The operations in the reverse sequence may cause component damage or personal injury.

NOTE

When installing RRUs outdoors, use a ground clip to ground RRU power cables near the feeder window before routing them into the equipment room. However, this grounding measure is not required for RRUs installed indoors. As an example, the following figure shows the procedure for installing power cables for RRUs installed outdoors.

Step 3 Optional: Route the RRU power cable from the RRU side to the DCDU side through the feeder

window. Install a ground clip near the feeder window outside the equipment room, and connect the PGND cable on the ground clip to the external ground bar. The installation procedure of ground clip is as follows:

1. Use a utility knife to strip 63 mm (2.48 in.) long jacket off the power cable to expose the shield layer.

Figure 11-22 Stripping the jacket off the power cable

2. Wrap the copper sheet of the ground clip around the shield layer of the power cable, and use cable ties to bind them tightly. Then trim off surplus part from the heads of the cable ties without leaving any sharp edge.

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Figure 11-23 Wrapping and tying the copper sheet of the ground clip

(1) Hole for a cable tie (12AWG/4 mm2 or 0.006 in.2) (2) Hole for a cable tie (≥ 6 mm2 or 0.009 in.2)

3. Wrap three layers of waterproof tape and three layers of insulation tape around the ground clip.

Figure 11-24 Wrapping the waterproof tape and insulation tape

(1) Waterproof tape

(4) Power cable (5) PGND cable -

(2) Insulation tape (3) Cable tie

NOTICE

Trim off surplus part of the cable ties at the position 3 mm (0.12 in.) to 5 mm (0.20 in.) away from the head of the cable tie.

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Step 4 Connect connectors at the other end of the RRU power cables to the correct ports and use a

11 Installing the Cables

screwdriver to tighten them, as shown in Figure 11-25.

l For a BTS3900 (Ver.B) or BTS3900L (Ver.B), the OT terminals are connected to the LOAD0

to LOAD5 terminals on the DCDU-03B.

l For a BTS3900 (Ver.C) or BTS3900L (Ver.C), the tool-less female connectors (pressfit type)

are connected to the LOAD0 to LOAD5 ports on the DCDU-11B.

Figure 11-25 Installing the RRU power cables

(1) Feeder window (2) Ground clip (3) External ground bar

Step 5 Lay out the cables according to the instructions in Cabling Requirements, and use cable ties to

bind them.

Step 6 Label the installed cables according to the instructions in Attaching a Sign Plate Label.

----End

11.6 Installing the Transmission Cables

11.6.1 Installing an E1/T1 Cable

An E1/T1 cable transmits E1/T1 signals between the BBU and transmission equipment.

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Prerequisites

Context

Procedure

Step 1 Connect the E1/T1 cable to the port on the corresponding board, as shown in Figure 11-26.

11 Installing the Cables

CAUTION

Before soldering the connectors to the E1/T1 cable, ensure that both ends of the E1 cable are disconnected from any devices. In addition, all the connectors are soldered to the E1 cable during the same session.

For the connections of installing the E1/T1 cable, see the section about transmission cable connections in Hardware Description of each product.

Figure 11-26 Installing the E1/T1 Cable

Step 2 Secure the two captive screws to 0.25 N·m (2.21 lbf·in.).

Step 3 Route the E1/T1 cable along the cable trough on the right of the cabinet, and then use cable ties

to bind the cable.

Step 4 Attach labels to the installed cables by referring to Attaching an L-Shaped Label.

----End

11.6.2 Installing an FE/GE Optical Cable

This section describes the procedure and precautions for installing FE/GE optical cable. FE/GE optical cables are required for communication between a transmission device and a base station through FE/GE optical fiber.

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Prerequisites

Context

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NOTICE

l Wear ESD gloves or an ESD wrist strap before installing a module to protect the module

from any damage.

l Install a binding strap before bending optical fiber to protect the fiber from being broken.

l The performance of an optical module that is exposed to the air for more than 20 minutes

may be abnormal. Therefore, you must insert an fiber optic cable into an unpacked optical module within 20 minutes.

l Single-mode optical modules are labeled as SM and multimode optical modules are labeled

as MM.

l The puller of a single-mode optical module is blue. The puller of a multimode optical

module is black or gray.

Procedure

Step 1 Install an optical module, as shown in Figure 11-27 and Figure 11-28.

l The optical modules to be installed must match the rates of their corresponding ports.

l An FE/GE fiber optic cable has an LC connector at one end and an FC, SC, or LC connector

at the other end.

l The SFP0 and FE/GE0 ports on an LMPT are used for one GE input. Therefore, the two

ports cannot be used simultaneously.

l The SFP1 and FE/GE1 ports on the LMPT are used for another GE input. Therefore, the

two ports cannot be used simultaneously.

1. Remove the dustproof cap from the FE/GE optical port on the corresponding BBU board.

2. Remove the dustproof cap from the optical module.

3. Lower the puller on the optical module.

4. Insert the optical module into the FE/GE optical port.

5. Raise the puller on the optical module.

Figure 11-27 Removing the dustproof cap from the port

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Step 2 Install the fiber optic cable, as shown in Figure 11-29.

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Figure 11-28 Installing the optical module

1. Remove the dustproof cap from the connector at the end labeled 2A and 2B on the fiber optic cable, and insert the connector into the optical module on the BBU.

2. Route the fiber optic cable out of the cable outlet on the bottom right side of the cabinet.

3. Connect the other end of the fiber optic cable to a routing device.

NOTICE

The TX and RX ports on the BBU boards must be connected to the RX and TX ports on the transmission equipment, respectively.

Figure 11-29 Routing the FE/GE optical cable

Step 3 Lay out the cables according to the instructions in Cabling Requirements. If a fiber optic patch

cord is used as a BBU interconnection signal cable, use binding straps to bind the BBU interconnection signal cable before using cable ties to secure it. If another type of cable is used as a BBU interconnection signal cable, directly use cable ties to secure it.

Step 4 Label the installed cables according to the instructions in Attaching an L-Shaped Label.

----End

11.6.3 Installing an FE/GE Cable

This section describes the procedure and precautions to be taken for installing an FE/GE cable.

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Context

Procedure

Step 1 Connect one end of an FE/GE cable to the FE0 port on the GTMU, WMPT, LMPT, UMPT, or

11 Installing the Cables

l The shielded straight-through FE/GE cable is the only qualified type of FE/GE cable.

l The FE/GE cable transmits baseband signals between a BBU and transmission equipment.

For the connections of FE/GE Ethernet cables, see the section about transmission cable connections in the Hardware Description of each product.

UTRP, as shown in Figure 11-30.

Figure 11-30 Installing the FE/GE cable

Step 2 Route the other end of the FE/GE cable out of the cabinet from a cable outlet.

Step 3 Route the cable along either side of the cabinet by referring to 11.1 Cabling Requirements, and

then use cable ties to bind the cable.

Step 4 Label the installed cables by referring to Attaching an L-Shaped Label.

----End

11.7 Installing the Monitoring Signal Cables

This section describes the procedure for installing monitoring signal cables and provides important notes about the installation.

11.7.1 (Optional) Installing the Inter-BBU Signal Cable

This section describes the procedure for installing inter-BBU signal cables for a base station.

Prerequisites

l A new BBU has been added.

l Optical modules and fiber optic cables meeting the following requirements are available:

– The optical modules and fiber optic cables are of the multimode type.

– The multimode optical modules to be installed on the UMPT and UCIU support the

rates of 5 Gbit/s and 2.5 Gbit/s.

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– The interconnection signal cable between the WBBPf boards in two BBUs must be a

QSFP cable.

NOTE

l Single-mode optical modules are labeled as SM and multimode optical modules are labeled as

MM.

l The puller of a single-mode optical module is blue. The puller of a multimode optical module is

black or gray.

l Figure 11-31 shows the label on an optical module.

Figure 11-31 Label on an optical module

Context

(1) Maximum rate

(2) Wavelength (3) Transmission mode

Table 11-2 lists the interconnection modes of two BBUs and the ports to which the inter-BBU

signal cable is connected. For details about the BBU interconnection, see Inter-BBU Signal Cable Connections.

Table 11-2 Ports to which the inter-BBU signal cable is connected

Interconnection

Installation Position

Mode

BBU0 Side BBU1 Side

UCIU+UCIU M0 port on the UCIU S0 port on the UCIU

UCIU+UMPT M0 port on the UCIU CI port on the upper UMPT

M1 port on the UCIU CI port on the lower UMPT

HEI port on the WBBPf HEI port on the WBBPf

NOTE

l BBU0 is the root BBU. BBU1 is the leaf BBU.

l A 2 m inter-BBU signal cable is recommended if the distance between BBU0 and BBU1 is shorter than 2

l A 10 m inter-BBU signal cable is recommended when the distance between BBU0 and BBU1 ranges from

2 m to 10 m.

l The optical modules to be installed must match the rates of their corresponding ports.

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